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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2013
Equity [Abstract]  
Accumulated Other Comprehensive Income (Loss)
20. Accumulated Other Comprehensive Loss
The following tables set forth the changes in the balance of accumulated other comprehensive loss, by component:
 
 
Defined Benefit Plans
 
Currency Translation Adjustments
 
Total
 
 
(Dollars in millions)
At December 31, 2011
 
$
(6.3
)
 
$
(0.2
)
 
$
(6.5
)
Other comprehensive income before reclassifications
 
—

 
(1.1
)
 
(1.1
)
Amounts reclassified from accumulated other comprehensive
   income
 
(1.9
)
 
—

 
(1.9
)
Retirement benefit plans funded status adjustment
 
1.6

 
—

 
1.6

Net current-period other comprehensive loss
 
(0.3
)
 
(1.1
)
 
(1.4
)
At December 31, 2012
 
(6.6
)
 
(1.3
)
 
(7.9
)
Other comprehensive income before reclassifications
 
—

 
(10.0
)
 
(10.0
)
Amounts reclassified from accumulated other comprehensive
   income
 
(1.9
)
 
—

 
(1.9
)
Retirement benefit plans funded status adjustment
 
5.7

 
—

 
5.7

Net current-period other comprehensive income (loss)
 
3.8

 
(10.0
)
 
(6.2
)
At December 31, 2013
 
$
(2.8
)
 
$
(11.3
)
 
$
(14.1
)

    
The impact of net income on reclassification adjustments from accumulated other comprehensive loss were as follows:
 
 
December 31,
 
2013
 
2012
 
2011
 
(Dollars in millions)
 
 
Amortization of defined benefit plan items to net income:
 
 
 
 
 
 
Prior service income
 
$
5.7

 
$
5.6

 
$
5.6

Actuarial loss
 
(2.5
)
 
(2.5
)
 
(1.7
)
Total before taxes
 
3.2

 
3.1

 
3.9

Income tax expense
 
(1.3
)
 
(1.2
)
 
(1.2
)
Total, net of tax
 
$
1.9

 
$
1.9

 
$
2.7